//
//  UIBarButtonItem+Extension.swift
//  iOSWeibo10
//
//  Created by 李伟鹏 on 16/5/13.
//  Copyright © 2016年 itcast. All rights reserved.
//

import UIKit

extension UIBarButtonItem{
    convenience init(imageName:String,target:AnyObject?,action:Selector){
        let button = UIButton()
        button.setImage(UIImage(named: imageName), forState: UIControlState.Normal)
        button.setImage(UIImage(named: imageName + "_highlighted"), forState: UIControlState.Highlighted)
        button.sizeToFit()
        button.addTarget(target, action: action, forControlEvents: UIControlEvents.TouchUpInside)
        self.init(customView:button)
    }
    
    //方法3
    class func createBarButtonItem(imageName:String) -> UIBarButtonItem {
        let button = UIButton()
        button.setImage(UIImage(named: imageName), forState: UIControlState.Normal)
        button.setImage(UIImage(named: imageName + "_highlighted"), forState: UIControlState.Highlighted)
        button.sizeToFit()
        return UIBarButtonItem(customView: button)
    }
}
